Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5405197 | Tamper-evident sealing system for envelope & method of making same | — | 1995-04-11 |
| 5391136 | Tamper-evident sealing system for envelope and method of making same | — | 1995-02-21 |
| 5077001 | Tamper-evident sealing system for envelope having special characteristics and method of making same | — | 1991-12-31 |
| 4834552 | Tamper-evident seal for envelope and method of making same | — | 1989-05-30 |
| 4733817 | Envelope system with multiple pockets | — | 1988-03-29 |